HKesupplier via eBay offers a 300-LED 16.4-Foot Lighting Strip in five colors for $3.90 with free shipping. That's $2 below our mention from a week ago and the lowest total price we've seen. (It's also the best price we could find for similar lights by $2, outside of other eBay sellers.) This 12-volt strip features a self-adhesive backing.
Note: Allow up to three weeks for delivery.